Recent content by ymd

  1. Y

    Hub motor stopped working. Help!

    Yes, I did follow the directions in the link that you give me: https://www.ebikes.ca/documents/HallSensorTestingFinal.pdf. The phase wires are 3 thick wires that are separately connected to the motor unlike the hall sensors that are connected through a single connector. Have I got the difference...
  2. Y

    Hub motor stopped working. Help!

    I checked the phase wires with a multimeter. There is continuity between the phase wires (low resistance). When two phase wires are touching there is significant drag when rotated backwards, I also checked the voltage on the phase wires (between Black-Yellow, Black-Green and Black-Blue. The...
  3. Y

    Hub motor stopped working. Help!

    Thank you all for your help, I finally got to work on my hub motor. The gear teeth on the plastic gears were completely worn out as can be seen in the attached photo. I replaced the gears and clutch and put everything back together and it seemed to work well. Today as I rode my bike to work...
  4. Y

    Hub motor stopped working. Help!

    The last time I opened the motor, I did not know how to go about it and struggled as I did not have the right tools. This time I have ordered a gear puller and circlip pliers. Would I need anything else. Is there a video on how to open the motor?
  5. Y

    Hub motor stopped working. Help!

    When I give it throttle, this is how the motor sounds: https://photos.app.goo.gl/WsLtT3F32cz5pbSL7 . The wheel does not spin. Just before the present situation, there was crunchy noise. I was going on a rough road and though it was road noise for a moment. That is when I stopped to investigate...
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    Hub motor stopped working. Help!

    Yes, the 6000 miles is all in one year. I commute everyday 18 miles each way. I have hardly used my car in the last over 1 1/2 years. Sometimes I take the bus. Yes, somewhat sounds like that. Here is how it sounds like: https://photos.app.goo.gl/WsLtT3F32cz5pbSL7 I put the bike upside down...
  7. Y

    Hub motor stopped working. Help!

    I checked the hall sensors. It seems they are working. I connected the multimeter between black to yellow, green and blue wires while spinning the wheel forward and the voltage varies between 0 to 5V in all cases. I checked all the wires. Found the yellow wire on the hall sensor connector was...
  8. Y

    Hub motor stopped working. Help!

    I looked at all wires and nothing was obviously frayed. There’s no noise when motor is spun with no power. I have not changed anything over nearly a year. I had replaced motor last year under warranty from EM3ev. The noise sounds like a Tesla car passing by. In fact when I first heard the noise...
  9. Y

    Hub motor stopped working. Help!

    Yesterday wile riding home from work my bike hub motor started making noise. I stopped to check. All the wires were in place. Checked the throttle. The motor ran a bit and stopped entirely. Now it makes just a noise and does not run at all either in pedal assist or throttle. Needless to say, I...
  10. Y

    MAC motor hub not engaging

    Over the weekend I was able to unscrew the freewheel using the vice. I soaked it overnight in degreaser solution and cleaned it. I found that the clicking came back. But, sometimes it is still gets unstuck, especially when the sprocket is tilted. I have now put it back on my bike. The sprocket...
  11. Y

    MAC motor hub not engaging

    Can I use WD40 lubricant which I have instead of PB Blaster? Otherwise I will pick one up from the hardware store. If this can unstick the flywheel it would be great. Thank you very much for all your help.
  12. Y

    MAC motor hub not engaging

    Looks like a great idea! I have a vice and will try it tonight and let you know.
  13. Y

    MAC motor hub not engaging

    I tried to remove the sprocket with the removal tool. I tried very hard but it looks like the threads are completely stuck as I could not even budge it try as I may. Is there a way to loosen it up to remove it? Will soaking the inside of the sprocket where I insert the removal tool with...
  14. Y

    MAC motor hub not engaging

    Thank you for your advice. The sprocket is a screw type and not cassette version. I think I have the removal tool. I will remove the sprocket and see if the pawls are broken. If they are, I can order a replacement online. Thank you for saving me the effort of opening the motor itself. I will...
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